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Now showing items 1-60 of 60

(Research report / Forskningsrapport, 2012)

In the present paper results given in Natvig (1990) are generalized to a multistate, strongly coherent, nonrepairable system of independent components by considering the reduction in remaining system time above a certain ...

(Research report / Forskningsrapport, 2011)

Predicting the reliability of software systems based on a component-based approach is inherently difficult, in particular due to failure dependencies between software components. One possible way to assess and include ...

(Research report / Forskningsrapport, 2010)

In the present paper we consider a multistate monotone system of multistate components. Following a Bayesian approach, the ambition is to arrive at the posterior distributions of the system availabilities and unavailabilities ...

(Research report / Forskningsrapport, 2010)

Predicting the reliability of software systems based on a component approach is inherently difficult, in particular due to failure dependencies between the software components. Since it is practically difficult to include ...

(Research report / Forskningsrapport, 2010)

In [10] dynamic and stationary measures of importance of a component in a repairable multistate system were introduced. For multistate systems little has been published until now on such measures even in the nonrepairable ...

(Research report / Forskningsrapport, 2009)

In Natvig and Gåsemyr (2009) dynamic and stationary measures of importance of a component in a binary system were considered. To arrive at explicit results the performance processes of the components were assumed to be ...

(Research report / Forskningsrapport, 2008)

In the present paper we use discrete event simulation in order to analyze a binary monotone system of repairable components. Asymptotic statistical properties of such a system, e.g., the asymptotic system availability and ...

(Research report / Forskningsrapport, 2008)

In the present paper the Natvig measures of component importance for repairable systems, and its extended version are analysed for two three component systems and a bridge system. The measures are also applied to an offshore ...

(Research report / Forskningsrapport, 2008)

In Dahl et al. (2007) we extended and refined some tools given in O'Hagan (2003) for criticism of Bayesian hierarchical models. Especially, avoiding double use of data by a data splitting approach was a main concern. Such ...

(Research report / Forskningsrapport, 2007)

One inherent weakness of traditional reliability theory (see eqr 340) is that the system and the components are always described just as functioning or failed. The first attempts to replace this by a theory for multistate ...

(Research report / Forskningsrapport, 2006)

Data from egg sampling surveys often contain a large proportion of zeros. We examine the time and location of collected walleye pollock egg counts from the western Gulf of Alaska, from Kodiak Island to Unimah Pass, in the ...

(Research report / Forskningsrapport, 2006)

In this paper the Barlow and Proschan (1975) measure of the importance of a component in a binary coherent system is revisited. This measure is for the case of components not undergoing repair equal to the probability of ...

(Research report / Forskningsrapport, 2005)

O'Hagan (2003) introduces some tools for criticism of Bayesian hierarchical models that can be applied at each node of the model, with a view to diagnosing problems of model fit at any point in the model structure. His ...

(Research report / Forskningsrapport, 2004)

Stochastic earthquake models are often based on a marked point process approach as for instance presented in Vere-Jones (1995).
This gives a fine resolution both in space and time making it possible to represent each ...

(Research report / Forskningsrapport, 2003)

We continue the work that was initiated in [7] on a fast marching-like method for simulating two-phase incompressible immiscible flow of water and oil in a porous medium. The purpose ot the present paper is threefold: (1) ...

(Research report / Forskningsrapport, 2003)

In Gåsemyr and Natvig (2001) partial monitoring of components with applications to preventive system maintenance was considered for a binary monotone system of binary components. The purpose of the present paper is to ...

(Research report / Forskningsrapport, 2002)

(Research report / Forskningsrapport, 2002)

The basic multistate reliability theory was developed in the eighties and the beginning of the nineties, replacing traditional reliability theory where the system and the components are always described as functioning or ...

(Research report / Forskningsrapport, 2001)

Background: According to published data, the ability to prevent various hypertension related events differs between the various anti-hypertensive drug groups. Although absolute drug effects with similar drugs also differ ...

(Research report / Forskningsrapport, 2001)

This survey is intended for estimating several types of copyright volume at different educational institutions in Norway. Using a calibration factor being equal to the ratio of the true number of machine pages taken from ...

(Research report / Forskningsrapport, 2000)

Two new different stochastic models for earthquake occurrence are discussed. Both models are focusing on the spatio-temporal interactions between earthquakes. The parameters of the models are estimated from a Bayesian ...

(Research report / Forskningsrapport, 2000)

(Research report / Forskningsrapport, 2000)

(Research report / Forskningsrapport, 1999)

In this paper we consider the generalized gamma distribution as introduced in Gåsemyr and Natvig (1998). This distribution enters naturally in Bayesian inference in exponential survival models with left censoring. In the ...

(Research report / Forskningsrapport, 1999)

(Research report / Forskningsrapport, 1997)

(Research report / Forskningsrapport, 1997)

(Research report / Forskningsrapport, 1997)

(Research report / Forskningsrapport, 1996)

(Research report / Forskningsrapport, 1995)

(Research report / Forskningsrapport, 1995)

(Research report / Forskningsrapport, 1994)

(Research report / Forskningsrapport, 1992)

(Research report / Forskningsrapport, 1992)

(Research report / Forskningsrapport, 1992)

(Research report / Forskningsrapport, 1992)

(Research report / Forskningsrapport, 1991)

(Research report / Forskningsrapport, 1990)

(Research report / Forskningsrapport, 1989)

(Research report / Forskningsrapport, 1988)

(Research report / Forskningsrapport, 1988)

(Research report / Forskningsrapport, 1986)

(Research report / Forskningsrapport, 1985)

(Research report / Forskningsrapport, 1985)

(Research report / Forskningsrapport, 1984)

(Research report / Forskningsrapport, 1984)

(Research report / Forskningsrapport, 1984)

(Research report / Forskningsrapport, 1984)

(Research report / Forskningsrapport, 1983)

(Research report / Forskningsrapport, 1983)

(Research report / Forskningsrapport, 1983)

(Research report / Forskningsrapport, 1982)

(Research report / Forskningsrapport, 1982)

(Research report / Forskningsrapport, 1982)

(Research report / Forskningsrapport, 1980)

(Research report / Forskningsrapport, 1978)

(Research report / Forskningsrapport, 1978)

(Research report / Forskningsrapport, 1978)

(Research report / Forskningsrapport, 1976)